It is not absurb at all. In fact, it is a prime example of asymmetric information theory.
People will buy Saga, FT, whatever, because they want to signal to others that they are good skiers.
The guitar example; If someone has a nice guitar, people will rationally assume that they can justify buying it. To justify buying it, we can assume they are good guitarists; that is the guitar plays a large roll in their life, and hence they are well-versed. A beginner will start off with a price point guitar, and as they improve, will upgrade their guitar.
If I decided to take up photography, I would not immediately go out and buy the most expensive lenses, or camera, or camera bag, etc. I would buy better equipment as a I progressed, as I needed it; AS MY SKILL LEVEL JUSTIFIED THE PURCHASE
So, the conclusion we can draw from the theory is this: your skill level will be procyclical with the quality of your equipment. As you get better, you will be able to justify buying more better, more expensive equipment.
So when gapers do in fact buy handmade skis, and expensive outerwear, it is to act as a signal they are better skiers than they truly are.
/micro